Spirit-lamp.



' No. 703,604. Pate-med 1u|y l, |902.

w. J. 0. MAST.

SPIRIT LAMP.

(Appnmion med Aug. 11, 1901.) LNO'IDdVBIJ maesse.'

TH: mums PErcns co. pHoro-Lupa whsumaom n. c.

UNITED STATES PATENT OFFICE.

VILLIAM J. D. MAST, OF BUFFALO,i YORK, ASSIGNOR TO THE BUFFALOVMANUFACTURING COMPANY, OFBUFFALO, NEW YORK.

sPlRlT- LAM P.

SPECIFICATION fern( ing part f Letters Patent No. 703,604, dated July 1,19.02.

Application filed August 17l 1901. Serial No. 72,374. (No model.) y

To a/ZZ whom it may concern:

Be it known that I, WILLIAM J. D. MAST, a citizen of the United States,residing at Buffalo, in the county of Erie and State of New York, haveinvented new and useful Improvements in Spirit-Lamps, of which thefollowing is a specification.

This invention relates to that class of spiritlamps which are providedwith regulating Io means or caps for more or less obstructing thellame-openings to control the volume of the llame. In the use of'suchlamps it has been found that where the air-supply for the flame is notshut 0E or diminished when the r 5 regulator or cap is operated todiminish or' extinguish the llame the flame is free to burn under thecap and in the air-supply passages, thuscausinginconvenience and attimes damage, as the flame is thereby directed downzo ward and'out atthey bottom of the air-passages, which being located in the lower partof some lamps is apt -to` ignite or scorch the supporting object onorover which the lamp is placed.

z 5 The principal object of this invention is to provide means forcontrolling the air-supply operated when the regulator orcap isoperated, to decrease or out off the air-supply as the flame isdecreased` or cut off, and to inis moved to increase the llame.

Another obj ect is to provide an air-supplycontrolling means operativelyconnected with and operated by the flame-regulator.

A further object is to so arrange the airsupply openings for the flameand so construct th'e regulating-cap that it will control the air-supplyopenings as well as the flameopening.

A further object is to provide the lamp with a flame-regulating capoperated by a handle longitudinally movable towardand from the lamp orradially with respect'to the lamp as contradistinguished to sidewise orcircumferentially.

A still further object is the production of a lamp of the characterstated of simple and improved construction.

In the accompanying drawings, Figure l 5o illustrates in an elevationalview a spiritlamp embodying the invention. Fig. 2 is a crease theair-supplyas the regulator or cap vertical sectional elevation. Fig. 3is a plan view with the top broken away to show the lregulating-cap,which is shown closed. Fig.

4 is an invertedhorizontal section on the line 55 il 4501?' Fig. y2,showing the cap open by full Vlines and partly closed by dotted lines.,Fig.

5 is a horizontal sectional view of a modified construction.

Like letters of reference refer to like parts 6o in the several gures.

Referring to the drawings, A indicates the lamp body or font, which maybe of any desired or usual ',construction; B, the usual ame andY fillingopeningv in the font-top; C, the asbestos or the like absorbent filling,and D the perforated or Wire-gauze diaphragm over the asbestos fillingand extending across the flame-openingand on which the llame burns.These parts are all common. 7o

E indicates an upright flange or wall on the font surrounding thedame-opening and provided around the same with air-supply openings e foradmitting air to the flame.

F indicates a cover, which hasv a snbstantially upright wallf,risingfrom an outwardlyextending or enlarged portionf of the lampfont, and' anannular substantially horizontal inwardly-extending top plate or flangeF, the central opening F2 of which is above and .8o substantially thesame size as the flame-open- .ing B in the font.

' Extending laterally outward from the lower portion of the uprightflange E and below the air-openings e therein is an annular plate orpartition G, which is secured at its outer edge to the upright wall f ofthe cover. This diaphragm divides `the space between thetop of the fontand the top ofthe cover-into a'lower annular air-space H and an upperannular 9o chamber I, in which the regulating-cap, presently to bedescribed, is located. The annular air-space II communicates with theeXternal air by means of openings h in the lower lpart of the uprightwally and with the capchamber by means of openings i in the annularplate G. Thus itwill be seen that the air-supply for the flame to reachthe air-openings e in the upright flange surrounding the llame-openingmust4 pass through the open- Ioo ing i.

Within the regulator-chamber--that is, be-

tween the horizontal partition G and the top cover-plate F-is a flameregulator or cap. which is shown to comprise two sections J and J, whichare mounted to move toward and from each other over the upright [langeE, surroundingr the flame-opening of the font, and between the same andthe opening in the cover-top to more or less or completely close or opencommunication between said openings, and thus extinguish or regulate thellame.

As before stated, to elfectually regulate or extinguish the flame theair-supply thereto should i be controlled as well as the flameopening,and for this purpose each regulatorcap section is provided with asubstantially semicircular depending flange, (indicated, respectively,atj andj.) By moving the capsections to open the llame-opening andpermit a large or full llame the iianges are carried to a position overor outwardly beyond the openings fi, and thus permit the air to passthrough the same to the air-opening e; but when the cap-sections aremoved to partially or completely close the flame-opening the liangesjand j are carried to a position over the openings I or between theopenings 'L' and e and either partially or completely shut olf theopenings e from communication with the external air through the openingst', depending upon the extent of movement of the cap-sections. Tofurther insure the necessary control of the air-openings and guaranree anice regulation, each tlangej andj carries at its bottom anoutwardly-extending horizontal flange, (indicated at 72 and '73,) whichslide over and cover or uncover the openings The horizontal flanges7'2'2'3 also provide flat supporting and sliding surfaces for thecap-sections and for this purpose slide on the horizontal plate orpartition G.

The cap-sections may be of any desired coniigu ration and provided withany suitable operating means to cause them to approach toward and recedefrom each other. Their construction and the construction of theoperating means (shown in Figs. l to 4) are as follows: The horizontalplate of each capsection has in its front or inner edge a substantiallysemicircular notch K, which when the sections are separated to the fullextent of their movement completely expose the burner-opening. Onecap-section-as, for instance, J-has its side portions at 7textendedforwardly, so as to overlap and rest upon the opposite section whenseparated to their full extent, and each section at its opposite ends isprovided with depending straight guide-ilanges, (indicated at 7c 7a2,respectively,) which may be and preferably are extensions of thesemicircular air-regulator flanges j and j. The lianges 7e of thecapsections J are outside of the `fianges 7a2 of the section J', theiianges mutually assisting in maintaining the cap-sections always inalinement. The llanges 7e and 7a2 also aid the flangesyl andy" inpreventing entrance of air to the openings e. The` guide-flanges 7o ofthe section J do not join the semicircular flange j tangentially, as isthe case with the flanges 752 of the other cap-section, but extendfarther rearward and have the inturned vportions k3, forming pockets toreceive the ends of the other cap-section J in order to admit ol' thesections being moved to completely close the burner-opening, which couldnot be done if the guide-iianges of each section joined the semicircularflange tangentially. Lindicatesguideandretainingstrips located betweenthe guide-ilanges 7c and the upright wall f of the cover and preferablysecured to the latter. This wall at opposite sides is provided withslots or openings l and Z', through which the cap-sections are adaptedto project when moved outwardly or away from each other.

Forsimultaneously moving the cap-sections in opposite directions one ofthemfor instance, J-has secured thereto an operatingrod M, projectingthrough the opening l and sliding in a bearing m, secured to the outsideof the cover-wall f. At its outer end the rod is provided with asuitable handle m.

N indicates a lever fulcrumed to the top plate F at n and provided witha slot fa', into which projects a stud or pin n2, secured to thecap-section J. O indicates a similar lever fulcrumed at o to the topplate and provided with a slot o, into which projects astud or pin o2,secured to the other cap-section J. The pins n2 and o2 are preferablyheaded to prevent disengagement from the slots.

P is a link pivoted at one end to one of the levers N O between itsfulcrum and its connection with the cap-section and pivoted at its otherend to the other of the levers N O beyond its fulcrum or on'the sidethereof opposite to its connection with the cap-section. By thisarrangement when the cap-section J is moved in or out by theoperating-rod M the other cap-section J is moved in the oppositedirection through the medium of said levers and link.

The lamp disclosed a-nd above described is especially adapted for use inconnection with a chating-dish, kettle, or the like, and, as well known,such lamps are usually loosely supported in a ring or cup-shaped bracketbeneath the dish or kettle. It is therefore apparent that in operatingthe regulator-cap by the push-rod M it is not necessary to hold the lampfrom turning in its support, as is apt to be the ease where a lever orsidewise-movable operating device is employed.

For convenience in manufacture the cover F is preferably made separatefrom the lampfont and is secured thereto by turning the lower edge ofthe upright wall under the outwardly-projecting portion of the font orbody. The sectional cap and its operating means are carried by the coverand are preferably assembled and arranged therein before the horizontalplate G is secured in place.

In Fig. 5 is illustrated a modified construction of means for causingthe opposite move- IOC IIC

flame-regulator for more or less obstructing said name-opening, meansfor regulating the air-supply, and connections whereby oneof saidregulating means is operated upon the operation of the other,substantially as set forth.

2. The combination with a lamp provided with a fiaine-opening and anair-supply opening, of a flame-regulator for more or less 0bstructi'ngsaid llame-opening, and means operated by the flame-regulator forcontrolling said air-supply opening, substantially as set forth.

3. The combinationy with a lamp provided with a name-opening and anair-supply opening, of a dame-regulator for more or less obstructingsaid flame-opening, and means carried by said flame-regulator for moreor less obstructing said air-supply opening, substantially as set forth.

4. The combination with a lamp provided with aflame-opening andair-supply opening, of a sectional flame-regulator for more or lessobstructing said lameopening, and parts carried by saidregulator-sections and controlling said air-openings, substantially asset forth. i

5. The combination with a lamp provided with a dame-opening surroundedby a wall provided with air-supply openings, of a sectionalflame-regulator provided with iianges for controlling said air-supplyopening, substantially as set forth.

6. The combination with a lamp having a flame-opening and a wallsurrounding the -same and provided with air-openings, of an annularplate surrounding said wall below said air-supply openings and providedwith air-openings, and a sectional flame-regulator provided with flangesadapted to be'moved to a position between said air-supply` openings inthe wall and said air-openings in the annular plate to regulate theair-supply, substantially as set forth.

7. The combination with a lamp having a flame-opening, and a wallsurrounding the same and provided with air-supply openings, of an`annular plate located below said air supply openings in the wall andhaving airopenings, and a sectional flame-regulator provided withvertical flanges adapted to be moved to a position betweensaidair-supply openings and the openings in the annular plate, andhorizontal Iianges extending outwardly from the lower ends of saidvertical flanges, substantially as set forth.

8. The combination with a lamp having a Haine-opening, of a sectionalregulator-cap the sections of which are slidable toward and from eachother, an operating-rod for said regulator arranged radially'relative tosaid lamp and connected to one of said cap-sections and movablelengthwise to operate the same, means for guiding said rod, andconnections between said regulator-cap'sections for causing theoperation of both regulatorcap sections when said operating-rod isactuated, substantially as set forth.

Witness my hand this 14th day of August, 1901.

VILLIAM J. D. MAST.

